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OnCell G2150I AT Command Set Data Commands
8-6
Select Data Compression: %C
Description: This command enables or disables data compression negotiation if this feature is
supported by the product.
Command syntax: AT%C<n>
Command Possible responses
AT%C0
Note: Command
OK
Note: Feature supported
AT%C2
Note: Command
OK
Note: V42bis supported
AT%C?
Note: Current value
2
OK
Note: Command valid
Defined values: <n>
0: no compression (default value)
2: V42bis compression if supported
V42 bis Data Compression: +DS
Description: This command enables or disables V.42bis data compression if this feature is
supported by the product. Beware that the product only allows the MNP2 protocol.
Command syntax: AT+DS=[[<dir>][,[<neg>][,[<P1>][,[<P2>]]]]
Command Possible responses
AT+DS=?
Note: Test command
+DS: (0-3),(0,1),(512-2048),(6-250) OK
AT+DS=3,0, 2048,250
Note: Set new parameters
OK
Note: Command valid
AT+DS?
Note: Current values
+DS: 3,0,2048,250
OK
Note: Command valid
Defined values:
< dir >: specifies the desired direction(s) of operation of the data compression function; from
the DTE point of view
0 Negotiated … no compression
1 Transmit only
2 Receive only
3 Both directions, accept any direction (default value)
< neg >: specifies whether or not the DCE should continue to operate if the desired result is not
obtained
0 Do not disconnect if V.42 bis is not negotiated by the remote DCE as specified in
<dir> (default value)
1 Disconnect if V.42 bis is not negotiated by the remote DCE as specified in <dir>
< P1 >: specifies the maximum number of dictionary entries that should be negotiated (default
is 2048)
Range 512 to 2048
< P2 >: specifies the maximum string length to be negotiated (default is 20).
Range 6 to 250